Java String的join()方法
String關於join()有兩個重載的方法
- public static String join(CharSequence delimiter, CharSequence... elements)
作用:將elements用指定的字符串delimeter連接起來,返回這個新組成的字符串
使用舉例:
String message = String.join("-", "Java", "is", "cool");
// message returned is: "Java-is-cool"
- public static String join(CharSequence delimiter, Iterable<? extends CharSequence> elements)
作用:將elements用指定的字符串delimeter連接起來,返回這個新組成的字符串
使用舉例:
List<String> strings = List.of("Java", "is", "cool");
String message = String.join(" ", strings);
// message returned is: "Java is cool"
Set<String> strings =
new LinkedHashSet<>(List.of("Java", "is", "very", "cool"));
String message = String.join("-", strings);
// message returned is: "Java-is-very-cool"
參考資料:
[1] jdk15.0.2